bad cghub id
Used for when any CGHub post or picture are no longer publicly available. CGHub would be shut down on the 14th of April, 2014, inspiring several websites to pop up to succeed it spiritually, such as Computer Graphics+/CG+ (later acquired by CGSociety in 2018), Drawcrowd and, most well-known, ArtStation.
See also
This tag implicates bad_id (learn more).